Customer : c
Me : m

*Few weeks ago*
C: the server is slow, it sometimes takes 7 seconds before I see our data

(the project is 7+ years old and wasn't written by someone who is very good in SQL)

M: yeah I see that, our servers are busy with this one "process" (SQL query)
C: make it faster
M: well that's possible but it will take a few days (massive SQL spaghetti that I first have to untangle)
C: 😡 nvm then

*Yesterday*
C: server is down !
M: 🤔 *loads data from server and waits ~ 7 seconds*
M: Well what's the problem?
C: I need the data but it's so slow

WELL YOU MINDLESS IMBECILE... If something is slow it doesn't mean our god damn production server is down !
That just means that you have to give us a day or two so we can optimise the (ALSO BY YOUR REQUEST) rushed project... And save you YOUR money that YOU waste on the processing time on our server...